The Fox Valley Park District is offering a fun class for preschoolers at Blackberry Farm this summer. The All Aboard! program for 4 to 6 year old meets at the farms Train Depot where children get to pretend to be station masters, then take a ride around the pond on the small-scale train. There are also train crafts, including a take-home whistle. The class meets for two hours with the choice of a June 30 or July 10 session. Full details are in the Summer Activity Guide. (Psst, it's on page 45.) Registration for residents begins May 10. Non-residents can sign up for activities beginning May 19.